from haystack import indexes

from .models import SKU

class SKUIndex(indexes.SearchIndex, indexes.Indexable):
    """
    SKU索引数据的模型类

    """

    text = indexes.CharField(document=True, use_template=True)


    def get_model(self):

        """返回建立索引的模型类"""

        return SKU


    def index_queryset(self, using=None):

        """返回要建立索引的数据查询集"""

        return self.get_model().objects.filter(is_launched=True)